Question

Match the enzymes given in column-I with its function given in column-II and select the correct option

Column-I	Column-II
A. beta-galactosidase	I. Joining of DNA fragments
B. Permease	II. Peptide bond formation
C. Ligase	III. Hydrolysis of lactose
D. Ribozyme	IV. Increase permeability of galactosidase

A. A-II; B-I; C-IV; D-III
B. A-III; B-IV; C-I; D-II
C. A-II; B-IV; C-I; D-III
D. A-I; B-II; C-IV; D-III

Answer 1

Hint: The chemical reactions, or metabolism, of our bodies are sped up by proteins known as enzymes. While certain compounds are decomposed, others are produced. Everything that is alive contains enzymes. Naturally, enzymes are produced by our bodies.


Complete step by step solution:
By accelerating chemical reactions, proteins called enzymes act as biological catalysts. Molecules that enzymes can interact with are known as substrates, and the enzyme transforms the substrates into other molecules known as products.
The disaccharide lactose is broken down by the enzyme -beta-galactosidase to create galactose and glucose, which are then used in the process of glycolysis. Additionally, this enzyme catalyzes the transgalactosylation of lactose to allolactose, which is ultimately broken down into monosaccharides. The lac permease is encoded by the lacY gene in the lac operon. Its main job in the lac operon is to use the proton gradient to carry lactose into the cells. The permease improves the cell's permeability to -galactosidase.
LacA is an enzyme that converts acetyl-CoA to thiogalactoside by adding an acetyl group. LacA encodes -galactoside transacetylase (LacA). The lac operon contains three genes that produce the lactose-metabolizing enzymes: LacZ is a -galactosidase enzyme that breaks down lactose into glucose and galactose. LacY, a -galactoside permease, carries lactose into the cell. In a nucleic acid molecule, ribozymes, which are RNA molecules, can both break and create covalent bonds. These compounds can bind and cleave an mRNA substrate with even larger potential advantages than antisense oligodeoxynucleotides.
So, option (B) is correct.

Note:
A biological catalyst called an enzyme is usually always a protein. It quickens a certain chemical process in the cell. During the reaction, the enzyme is continuously used and is not destroyed.